December 14, 2012 11:54 am

Crews will close two lanes of southbound Interstate 5 in Federal Way beginning tonight so they can work on improving drainage pipes, the state Department of Transportation reported.

The closure will begin at 8 p.m. near the state Route 161 (Enchanted Parkway) interchange. The lanes re-open by 6 a.m. Monday.

Workers will be extending an existing drainage system to help manage increased water runoff from a new series of ramps at the so-called Federal Way Triangle, where I-5, Route 161 and state Route 18 converge.

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